What does PDF stand for?

What does PDF mean?

PDF	Portable Document Format Academic & Science » Electronics
PDF	Portable Document Format Academic & Science » Universities
PDF	Portable Document Format Computing » Software
PDF	Portable Document Format Business » Products
PDF	Portable Document Format Computing » General
PDF	Portable Document Format Community » Media
PDF	Portable Document Format Governmental » FDA
PDF	Probability Density Function Academic & Science » Mathematics
PDF	Probability Distribution Function Academic & Science » Mathematics
PDF	Parkinson's Disease Foundation Community » Non-Profit Organizations
PDF	Adobe Acrobat Portable Document Format Computing » File Extensions
PDF	Profilo Dinamico Funzionale International » Italian
PDF	Parkinson's Disease Foundation, Inc. Community » Non-Profit Organizations
PDF	Package Definition File Computing » File Extensions
PDF	Program Development Facility Computing » General
PDF	Peace Development Fund Community » Non-Profit Organizations
PDF	Partnership Development Fund Governmental » Police
PDF	Panamanian Defense Force Governmental » Military
PDF	Program Data Form Governmental » Military
PDF	Pigs Do Fly Miscellaneous » Funnies
PDF	Programmable Data Formatter Governmental » NASA
PDF	PCAD Database Interchange Format Computing » File Extensions
PDF	Netware Print Device Information Computing » File Extensions
PDF	ED-SCAN 24bit format Graphics file Computing » File Extensions
PDF	John Hancock Patriot Prime Development 1 Business » NYSE Symbols